25993480 has 32 divisors (see below), whose sum is σ = 58757400. Its totient is φ = 10349056.

The previous prime is 25993441. The next prime is 25993489. The reversal of 25993480 is 8439952.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18714276 + 7279204 = 4326^2 + 2698^2 .

It is a super-2 number, since 2×25993480² = 1351322005020800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (25993489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7926 + ... + 10714.

Almost surely, 2^25993480 is an apocalyptic number.

25993480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25993480 is an abundant number, since it is smaller than the sum of its proper divisors (32763920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25993480 is a wasteful number, since it uses less digits than its factorization.

25993480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3029 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 25993480 is about 5098.3801349056. The cubic root of 25993480 is about 296.2248413418.

It can be divided in two parts, 259 and 93480, that added together give a palindrome (93739).

The spelling of 25993480 in words is "twenty-five million, nine hundred ninety-three thousand, four hundred eighty".